CN117437864A - Display system supporting peep-proof function and display control method - Google Patents

Display system supporting peep-proof function and display control method Download PDF

Info

Publication number
CN117437864A
CN117437864A CN202211116639.7A CN202211116639A CN117437864A CN 117437864 A CN117437864 A CN 117437864A CN 202211116639 A CN202211116639 A CN 202211116639A CN 117437864 A CN117437864 A CN 117437864A
Authority
CN
China
Prior art keywords
display
signal
screen
path
response
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211116639.7A
Other languages
Chinese (zh)
Inventor
张方玮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Acer Inc
Original Assignee
Acer Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Acer Inc filed Critical Acer Inc
Publication of CN117437864A publication Critical patent/CN117437864A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/068—Adjustment of display parameters for control of viewing angle adjustment
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2354/00—Aspects of interface with display user
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2358/00—Arrangements for display data security

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

The invention provides a display system supporting a peep-proof function and a display control method. The method comprises the following steps: providing a first light source driving signal to the display through a first signal path of the switching circuit to drive the display to display a first image in a first display mode; generating a trigger signal in response to a user operation; and responding to the trigger signal and providing a second light source driving signal to the display through a second signal path of the switching circuit so as to drive the display to display a second image in a second display mode, wherein the first signal path is different from the second signal path, and the screen brightness of the display in the second display mode is lower than that of the display in the first display mode. Therefore, the display can be effectively assisted to execute the screen peep-proof function.

Description

Display system supporting peep-proof function and display control method
Technical Field
The present invention relates to a display control technology, and in particular, to a display system supporting a peep-proof function and a display control method.
Background
When a user operates a notebook computer or a desktop computer, in order to avoid that pictures on a computer screen are watched by other people, a peep-proof sheet is often hung on the computer screen. However, after the peep-proof sheet is hung, the brightness of the computer screen is greatly reduced. Therefore, in order to improve the display quality of the picture, when no person is present around, the user often needs to manually remove the peep-proof sheet on the screen, which causes trouble in use.
Disclosure of Invention
The present invention provides a display system supporting a peep-proof function and a display control method, which can improve the above problems.
The embodiment of the invention provides a display system supporting a peep-proof function, which comprises a display, a switching circuit, a first control circuit, a second control circuit and a key module. The switching circuit is connected to the display. The first control circuit is connected to the switching circuit. The second control circuit is connected to the switching circuit and the display. The key module is connected to the second control circuit. The first control circuit is used for providing a first light source driving signal to the display through a first signal path of the switching circuit so as to drive the display to display a first image in a first display mode. The key module is used for responding to user operation to generate a trigger signal. The second control circuit is used for responding to the trigger signal and providing a second light source driving signal to the display through a second signal path of the switching circuit so as to drive the display to display a second image in a second display mode. The first signal path is different from the second signal path. The screen brightness of the display in the second display mode is lower than the screen brightness of the display in the first display mode.
The embodiment of the invention further provides a display control method, which includes: providing a first light source driving signal to the display through a first signal path of the switching circuit to drive the display to display a first image in a first display mode; generating a trigger signal in response to a user operation; and providing a second light source driving signal to the display through a second signal path of the switching circuit in response to the trigger signal to drive the display to display a second image in a second display mode, wherein the first signal path is different from the second signal path, and the screen brightness of the display in the second display mode is lower than the screen brightness of the display in the first display mode.
Based on the above, the display system and the display control method for supporting the peep-proof function provided by the invention can provide different light source driving signals for the display through different signal paths in the switching circuit according to the trigger signal generated by the user operation, so as to adjust the screen brightness of the display in different display modes. Compared with the traditional display with the screen brightness uniformly controlled by a single signal path, the invention transmits the light source driving signals to the display through different signal paths, thereby effectively assisting the display to execute the screen peep-proof function.
Drawings
Fig. 1 is a schematic view of a display system supporting a peep-proof function according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a display system supporting a privacy function according to an embodiment of the present invention;
fig. 3 is a schematic view showing an adjustment of a visual angle of a display screen of a display in response to a screen peep-proof function being activated according to an embodiment of the present invention;
FIG. 4 is a flow chart of a display control method according to an embodiment of the present invention;
fig. 5 is a flowchart of a display control method according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.
Fig. 1 is a schematic diagram of a display system supporting a peep-proof function according to an embodiment of the present invention.
Referring to FIG. 1, the display system 10 can be implemented in various computer systems with displays, such as notebook computers and desktop computers. The display system 10 includes a display 11, a switching circuit 12, a control circuit (also referred to as a first control circuit) 13, a control circuit (also referred to as a second control circuit) 14, and a key module 15.
The display 11 is used for displaying images. For example, the Display 11 may include a Plasma Display (Plasma Display), a Liquid Crystal Display (LCD), a thin film transistor liquid crystal Display (Thin film transistor liquid crystal Display, TFT-LCD), an Organic Light-Emitting Diode (OLED), a Light-Emitting Diode Display (LED Display), and the like, and the type of the Display 11 is not limited thereto. In particular, the display 11 may support a screen privacy function. The peep-proof function of the screen can effectively prevent the picture displayed by the display 11 from being peeped by outsiders. Technical details about the peep-proof function of the screen will be described later.
The switching circuit 12 is connected to the display 11, the control circuit 13 and the control circuit 14. The control circuit 13 may be configured to generate a light source driving signal (also referred to as a first light source driving signal) PWM (1). For example, the control circuit 13 may include a light source driving circuit (also referred to as a first light source driving circuit) (not shown). The first light source driving circuit may be used to generate a light source driving signal PWM (1) according to a reference signal (not shown). The control circuit 14 may be configured to generate a light source driving signal (also referred to as a second light source driving signal) PWM (2). For example, the control circuit 14 may include another light source driving circuit (also referred to as a second light source driving circuit) (not shown). The second light source driving circuit may be used to generate the light source driving signal PWM (2) according to a reference signal (not shown). One of the light source driving signals PWM (1) and PWM (2) can be transmitted to the display 11 through the switching circuit 12 to drive the display 11 to display an image. For example, the light source driving signals PWM (1) and PWM (2) are both pulse width modulation (Pulse Width Modulation, PWM) signals. Both the light source driving signals PWM (1) and PWM (2) can be used to control the screen brightness of the display 11. It should be noted that the generation method of the light source driving signal is well known to those skilled in the art, and thus will not be described in detail herein.
In one embodiment, the control circuit 13 may be connected to one input (also referred to as a first input) of the switching circuit 12. The control circuit 13 may transmit the light source driving signal PWM (1) to the first input terminal of the switching circuit 12. The control circuit 14 may be connected to another input (also referred to as a second input) of the switching circuit 12. The control circuit 14 may transmit the light source driving signal PWM (2) to the second input terminal of the switching circuit 12. The display 11 may be connected to an output of the switching circuit 12. The switching circuit 12 can provide one of the light source driving signal PWM (1) generated by the control circuit 13 and the light source driving signal PWM (2) generated by the control circuit 14 to the display 11 through different signal paths, so as to drive the display 11 to display an image through one of the light source driving signals PWM (1) and PWM (2).
The display 11 may control or adjust the backlight brightness of a display panel (not shown) of the display 11 according to one of the received light source driving signals PWM (1) and PWM (2). For example, the backlight brightness may be positively correlated to the screen brightness of the display 11. That is, if the backlight luminance is higher, the screen luminance of the display 11 is also higher.
The key module 15 is connected to the control circuit 14. The key module 15 may detect a user operation and generate a trigger signal TR in response to the user operation. For example, the key module 15 may include physical keys, either contact or non-contact. The touch type physical key may be used to detect a touch type physical operation such as a touch or a press by a user and generate the trigger signal TR in response to the physical operation. The non-contact physical key may be used to detect a non-contact physical operation such as a finger approach of a user and generate the trigger signal TR in response to the physical operation. The trigger signal TR may be transmitted to the control circuit 14.
The control circuit 14 may switch or change the display mode of the display 11 in response to the trigger signal TR. For example, the control circuit 14 may control the display mode of the display 11 to switch between a preset display mode (also referred to as a first display mode) and a screen peep preventing mode (also referred to as a second display mode) in response to the trigger signal TR.
It should be noted that, in the first display mode (i.e., the preset display mode), the peep-proof function of the screen of the display 11 is not activated. That is, in the first display mode, the screen peep preventing function of the display 11 may be in an off state. In addition, in the second display mode (i.e., the screen peep preventing mode), the screen peep preventing function of the display 11 may be activated. That is, in the second display mode, the screen peep preventing function of the display 11 may be in an activated state. In other words, the control circuit 14 may activate or deactivate the screen privacy function of the display 11 in response to the trigger signal TR.
The control circuit 13 may provide the light source driving signal PWM (1) to the display 11 through one signal path (also referred to as a first signal path) of the switching circuit 12. The light source driving signal PWM (1) may be used to drive the display 11 to display an image (also referred to as a first image) in the first display mode. Thus, in the first display mode, the control circuit 13 may control or adjust the screen brightness of the display 11 according to the light source driving signal PWM (1). In other words, in the first display mode (i.e., the preset display mode), the control authority of the screen brightness (or backlight brightness) of the display 11 is configured to the control circuit 13.
When a user performs a user operation to trigger the key module 15 (e.g., presses an entity button in the key module 15), the key module 15 may generate a trigger signal TR in response to the user operation. In one embodiment, the trigger signal TR may be used to switch or change the display mode of the display 11. In one embodiment, the trigger signal TR may be used to activate or deactivate the screen privacy function of the display 11.
In one embodiment, the trigger signal TR can also be used to switch or change the control authority of the control circuits 13 and 14 to the screen brightness (or backlight brightness) of the display 11. For example, in response to the trigger signal TR, the control circuit 14 may switch or change the control authority of the control circuits 13 and 14 to the screen brightness (or backlight brightness) of the display 11.
In case the control circuit 13 supplies the light source driving signal PWM (1) to the display 11 via a first signal path of the switching circuit 12, the control circuit 14 may supply the light source driving signal PWM (2) to the display 11 via another signal path (also referred to as a second signal path) of the switching circuit 12 in response to the trigger signal TR. The light source driving signal PWM (2) may be used to drive the display 11 to display an image (also referred to as a second image) in the second display mode. Wherein the first signal path is different from the second signal path. Thus, in the second display mode, the control circuit 14 may control or adjust the screen brightness of the display 11 according to the light source driving signal PWM (2). In other words, in the second display mode (i.e., the screen peep preventing mode), the control authority of the screen brightness (or backlight brightness) of the display 11 is configured to the control circuit 14. In particular, the screen brightness (or backlight brightness) of the display 11 in the second display mode may be lower than the screen brightness (or backlight brightness) of the display 11 in the first display mode.
On the other hand, in the case where the control circuit 14 supplies the light source driving signal PWM (2) to the display 11 through the second signal path of the switching circuit 12, the control authority for the screen brightness (or backlight brightness) of the display 11 may be reconfigured to the control circuit 13 in response to the trigger signal TR. Accordingly, in response to the trigger signal TR, the control circuit 13 may provide the light source driving signal PWM (1) to the display 11 again through the first signal path of the switching circuit 12 to drive the display 11 to display the first image in the first display mode.
In one embodiment, in the first display mode (i.e., the preset display mode), the display 11 may set the screen brightness (or the backlight brightness) of the display 11 to a preset brightness according to the instruction of the control circuit 13 (i.e., the light source driving signal PWM (1)). However, in the second display mode (i.e., the screen peep preventing mode), the display 11 may set the screen brightness (or backlight brightness) of the display 11 to be lower than the preset brightness according to the instruction of the control circuit 14 (i.e., the light source driving signal PWM (2)).
In one embodiment, in response to the screen peep-proof function being activated (i.e., the display 11 is operating in the second display mode), the screen brightness (or backlight brightness) of the display 11 may be reduced, e.g., below the predetermined brightness. In addition, in response to the screen peep-proof function being turned off (i.e., the display 11 is operated in the first display mode), the screen brightness (or backlight brightness) of the display 11 may be increased or restored, e.g., increased or restored to the preset brightness.
In an embodiment, the control circuit 14 may also generate the path selection signal SEL in response to the trigger signal TR. The path selection signal SEL may be transmitted to the switching circuit 12. For example, the path selection signal SEL may be transmitted to the control terminal of the switching circuit 12. The switching circuit 12 may switch the signal conduction path therein according to the path selection signal SEL. For example, the switching circuit 12 may switch the signal conducting path inside from one of the first signal path and the second signal path to the other of the first signal path and the second signal path according to the path selection signal SEL.
In one embodiment, the control circuit 14 may also generate the enable signal EN in response to the trigger signal TR. The enable signal EN may be transmitted to the display 11. In response to the enable signal EN, the display 11 may switch or change its display mode (equivalent to turning on or off the screen peep-proof function). For example, the display 11 may switch the display mode from the first display mode to the second display mode or switch the display mode from the second display mode to the first display mode according to the enable signal EN.
In one embodiment, the display 11 may also adjust the visual angle of the display screen of the display 11 in response to the enable signal EN. For example, in response to the screen peep-proof function being activated (i.e., the display 11 is operated in the second display mode), the display 11 may automatically reduce the viewing angle of the display screen, for example, to less than a predetermined angle. In addition, in response to the screen peep-proof function being turned off (i.e., the display 11 is operated in the first display mode), the display 11 may automatically increase or restore the visual angle of the display screen thereof, for example, to the preset angle.
Fig. 2 is a schematic diagram of a display system supporting a peep-proof function according to an embodiment of the present invention.
Referring to fig. 2, the display system 20 may include the display 11, the switching circuit 12, the control circuit 13, the control circuit 14 and the key module 15 of fig. 1. In particular, in the embodiment of fig. 2, the control circuits 13 and 14 are exemplified by a central processing unit (Central Processing Unit, CPU) and an embedded controller (Embedded Controller, EC), respectively, but the types of the control circuits 13 and 14 are not limited thereto.
First display mode (i.e. preset display mode)
In the first display mode, the control circuit 13 may transmit the light source driving signal PWM (1) to the interface 221 of the switching circuit 12 (i.e. the first input terminal of the switching circuit 12) through the interface 231. Meanwhile, the control circuit 14 may transmit the path selection signal SEL to the interface 224 of the switching circuit 12 (i.e. the control terminal of the switching circuit 12) through the interface 243. For example, interfaces 243 and 224 may conform to General-Purpose Input/Output (GPIO) specifications, and the types of interfaces 243 and 224 are not limited thereto. According to the path selection signal SEL, the switching circuit 12 may turn on the signal path 21 (i.e., the first signal path) between the interfaces 221 and 223 (i.e., the output terminal of the switching circuit 12) of the switching circuit 12 as a current signal conduction path and turn off the signal path 22 (i.e., the second signal path) between the interfaces 222 (i.e., the second input terminal of the switching circuit 12) and 223 of the switching circuit 12. Accordingly, the light source driving signal PWM (1) may be transmitted to the display 11 through the turned-on signal path 21. The display 11 may receive the light source driving signal PWM (1) through the interface 211 and control or adjust the screen brightness (or backlight brightness) of the display 11 according to the light source driving signal PWM (1).
Switching of display mode (switching from first display mode to second display mode)
In one embodiment, key module 15 includes physical key 251. For example, the physical key 251 may be a shortcut key on a physical keyboard. The key module 15 may generate the trigger signal TR when a user operation (e.g., a user pressing the shortcut key) of the triggerable entity key 251 is received or detected. The control circuit 14 may receive the trigger signal TR through the interface 241. For example, the interface 241 may be a serial communication interface (Serial Communicate Interface, SCI) or a serial external interface (Serial Peripheral Interface, SPI), and the type of interface 241 is not limited thereto.
In the first display mode, the control circuit 14 may transmit the enable signal EN to the display 11 through the interface 244 in response to the trigger signal TR. The display 11 may receive the enable signal EN through the interface 212. For example, interfaces 244 and 212 may also conform to General Purpose Input Output (GPIO) specifications, and the types of interfaces 244 and 212 are not limited thereto. In response to the enable signal EN, the display 11 may switch its display mode from the first display mode to the second display mode (i.e., the screen peep-preventing mode) and activate the screen peep-preventing function.
Second display mode (i.e. Screen peep-proof mode)
In the second display mode, the control circuit 14 may transmit the light source driving signal PWM (2) to the interface 222 of the switching circuit 12 through the interface 242. Meanwhile, the control circuit 14 can adjust the path selection signal SEL and transmit the adjusted path selection signal SEL to the interface 224 of the switching circuit 12 through the interface 243. According to the adjusted path selection signal SEL, the switching circuit 12 may disconnect the signal path 21 and turn on the signal path 22 as the current signal conduction path. Accordingly, the light source driving signal PWM (2) may be transmitted to the display 11 through the turned-on signal path 22. The display 11 may receive the light source driving signal PWM (2) through the interface 211 and control or adjust the screen brightness (or backlight brightness) of the display 11 according to the light source driving signal PWM (2). In particular, after switching from the first display mode to the second display mode, the display 11 may decrease the screen brightness (or backlight brightness) of the display 11 according to the light source driving signal PWM (2). In addition, in response to the screen peep-proof function being activated, the display 11 may also adjust (e.g., reduce) the viewing angle of the display screen of the display 11.
Switching of display mode (switching from second display mode back to first display mode)
In the second display mode, it is assumed that the key module 15 generates the trigger signal TR again in response to the user operation. In response to the trigger signal TR, the control circuit 14 may transmit the enable signal EN to the display 11 again through the interface 244. In response to the enable signal EN, the display 11 may switch its display mode from the second display mode back to the first display mode and turn off the screen peep-proof function. In addition, in response to the screen peep preventing function being turned off, the display 11 may also adjust (e.g., increase or restore) the visual angle of the display screen of the display 11.
In an embodiment, in the first display mode and the second display mode, the path selection signal SEL may be logic low and logic high, respectively. Alternatively, in an embodiment, the path selection signal SEL may be logic high and logic low in the first display mode and the second display mode, respectively. In addition, in other embodiments, the path selection signal SEL can be adjusted according to the actual requirements, which is not limited by the present invention.
Fig. 3 is a schematic view showing an adjustment of a visual angle of a display screen of a display in response to a screen peep preventing function being activated according to an embodiment of the present invention.
Referring to fig. 3, in the first display mode, the peep-proof function of the screen is not yet activated. Therefore, in the first display mode, the viewing angle of the display screen of the display 11 can be represented by the viewing range VR (1). For example, the visual range VR (1) may cover a range extending at most about 85 degrees or even approaching 90 degrees from the right and left sides of the display screen of the display 11. It should be noted that the present invention is not limited to the specific range size of the visual range VR (1).
In the second display mode, the screen peep-proof function is activated. Therefore, in the second display mode, the viewing angle of the display screen of the display 11 can be reduced. For example, in the second display mode, the viewing angle of the display screen of the display 11 may be represented by the viewing range VR (2). For example, the visual range VR (2) may cover a range extending by about 45 degrees at the maximum on both right and left sides in the right direction of the display screen of the display 11. Therefore, after the screen peeping prevention function is started, the situation that the picture displayed by the display 11 is peeped by an outsider can be effectively avoided. It should be noted that the invention is not limited to the specific range size of the visual range VR (2). The adjustment of the viewing angle of the display screen of the display 11 may be performed by dynamically adjusting the orientation of the light emitting elements on the display panel of the display 11, and the present invention is not limited thereto.
Fig. 4 is a flowchart of a display control method according to an embodiment of the present invention.
Referring to fig. 4, in step S401, a first light source driving signal is provided to the display through a first signal path of the switching circuit to drive the display to display a first image in a first display mode. In step S402, a trigger signal is generated in response to a user operation. In step S403, a second light source driving signal is provided to the display through a second signal path of the switching circuit in response to the trigger signal to drive the display to display a second image in a second display mode.
Fig. 5 is a flowchart of a display control method according to an embodiment of the present invention.
Referring to fig. 5, in step S501, a screen peep preventing function of the display is turned off and a first light source driving signal is provided to the display through a first signal path of the switching circuit to drive the display to display a first image in a first display mode. In step S502, it is determined whether a trigger signal is received. For example, the trigger signal may be generated by the key module in response to a user operation.
If a trigger signal (indicating that the user wants to start the screen peep-proof function of the display) is received, in step S503, the screen peep-proof function of the display is started and a second light source driving signal is provided to the display through a second signal path of the switching circuit, so as to drive the display to display a second image in a second display mode. If no trigger signal is received, after step S502, the process may return to step S501.
In step S504, it is determined whether the trigger signal is received again. If the trigger signal (indicating that the user wants to turn off the screen peep preventing function of the display) is received again, after step S504, the process returns to step S501, where the screen peep preventing function of the display is turned off and a first light source driving signal is provided to the display through a first signal path of the switching circuit, so as to drive the display to display a first image in a first display mode. If the trigger signal is not received again, after step S504, the process may return to step S503.
However, the steps in fig. 4 and fig. 5 are described in detail above, and will not be repeated here. It should be noted that each step in fig. 4 and fig. 5 may be implemented as a plurality of program codes or circuits, which is not limited in this disclosure. In addition, the methods of fig. 4 and 5 may be used with the above exemplary embodiments, or may be used alone, which is not limited.
In summary, compared with the conventional display in which the screen brightness is uniformly controlled by a single signal path or a single control circuit (e.g., a central processing unit), the present invention is responsible for the start of the screen peep preventing function and the supply of the light source driving signal after the start of the screen peep preventing function by the control circuit (e.g., an embedded controller) capable of directly communicating with the physical key, which can effectively improve the start efficiency of the screen peep preventing mode and the light source adjustment efficiency of the display. In addition, the screen brightness of the display is dynamically reduced, and the visual angle of the display picture of the display is dynamically reduced, so that the peep-proof performance of the screen can be effectively improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (10)

1. A display system supporting a privacy function, comprising:
a display;
a switching circuit connected to the display;
a first control circuit connected to the switching circuit;
the second control circuit is connected to the switching circuit and the display; and
a key module connected to the second control circuit,
wherein the first control circuit is used for providing a first light source driving signal to the display through a first signal path of the switching circuit so as to drive the display to display a first image in a first display mode,
the key module is used for responding to the operation of a user to generate a trigger signal,
the second control circuit is used for responding to the trigger signal and providing a second light source driving signal to the display through a second signal path of the switching circuit so as to drive the display to display a second image in a second display mode,
wherein the first signal path is different from the second signal path and the screen brightness of the display in the second display mode is lower than the screen brightness of the display in the first display mode.
2. The privacy display system of claim 1, wherein the second control circuit is further configured to generate a path selection signal in response to the trigger signal, and
the switching circuit switches a signaling path from the first signal path to the second signal path in response to the path selection signal.
3. The privacy display system of claim 1, wherein the second control circuit is further configured to generate an enable signal in response to the trigger signal, and
the display is used for responding to the enabling signal to start the screen peep-proof function.
4. The privacy function enabled display system of claim 3, wherein the display reduces the viewing angle of a display screen in response to the screen privacy function being activated.
5. The privacy function enabled display system of claim 1, wherein the user operation triggers a physical key of the key module.
6. A display control method, comprising:
providing a first light source driving signal to the display through a first signal path of the switching circuit to drive the display to display a first image in a first display mode;
generating a trigger signal in response to a user operation; and
providing a second light source driving signal to the display through a second signal path of the switching circuit in response to the trigger signal to drive the display to display a second image in a second display mode,
wherein the first signal path is different from the second signal path and the screen brightness of the display in the second display mode is lower than the screen brightness of the display in the first display mode.
7. The display control method according to claim 6, further comprising:
generating a path selection signal in response to the trigger signal; and
switching, by the switching circuit, a signaling path from the first signal path to the second signal path in response to the path selection signal.
8. The display control method according to claim 6, further comprising:
generating an enable signal in response to the trigger signal; and
the display is used for responding to the enabling signal to start the screen peep-proof function.
9. The display control method according to claim 8, further comprising:
and in response to the screen peep-proof function being started, reducing the visual angle of a display picture by the display.
10. The display control method of claim 6, wherein the user operation triggers an entity key.
CN202211116639.7A 2022-07-14 2022-09-14 Display system supporting peep-proof function and display control method Pending CN117437864A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW111126394 2022-07-14
TW111126394A TWI825847B (en) 2022-07-14 2022-07-14 Display system supporting privacy function and display control method

Publications (1)

Publication Number Publication Date
CN117437864A true CN117437864A (en) 2024-01-23

Family

ID=89510297

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211116639.7A Pending CN117437864A (en) 2022-07-14 2022-09-14 Display system supporting peep-proof function and display control method

Country Status (3)

Country Link
US (1) US20240021139A1 (en)
CN (1) CN117437864A (en)
TW (1) TWI825847B (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100301862B1 (en) * 1999-03-18 2001-09-26 서평원 Apparatus and Method for controlling Light Emitting Diode of Mobile phone
TWI485490B (en) * 2012-09-04 2015-05-21 Au Optronics Corp Anti-glimpse display apparatus and driving method thereof
KR102285264B1 (en) * 2015-02-10 2021-08-04 삼성전자주식회사 Display apparatus and method for driving backlight
US20170263208A1 (en) * 2016-03-10 2017-09-14 Lenovo (Singapore) Pte. Ltd. Method and apparatus for dynamically controlling privacy of a display screen
JP6848043B2 (en) * 2016-08-08 2021-03-24 昆山龍騰光電有限公司 Liquid crystal display device that can switch the viewing angle and its viewing angle switching method
US20210240021A1 (en) * 2018-10-02 2021-08-05 Hewlett-Packard Development Company, L.P. Privacy displays operating in two luminosity modes
WO2020246953A1 (en) * 2019-06-03 2020-12-10 Hewlett-Packard Development Company, L.P. Display modes
CN114639334A (en) * 2022-03-25 2022-06-17 昆山龙腾光电股份有限公司 Wide-narrow viewing angle switching circuit and display device

Also Published As

Publication number Publication date
US20240021139A1 (en) 2024-01-18
TW202403723A (en) 2024-01-16
TWI825847B (en) 2023-12-11

Similar Documents

Publication Publication Date Title
JP6055022B2 (en) Apparatus, system, method, and computer program for controlling an electronic display
US8196059B2 (en) Switch and on-screen display systems and methods
US20070192579A1 (en) Computer and control method thereof
TWI722577B (en) Display device capable of switching image source and operating system
US20060274052A1 (en) Electronic device with a touch display
JP2015206999A (en) display device
KR100828624B1 (en) Share apparatus of input/output device and display system comprising the same
KR20070028789A (en) Display apparatus
US11721302B2 (en) Display device capable of switching display mode and method thereof
US11231768B1 (en) Method of controlling stylus and finger touch detection and related controller
US20190012057A1 (en) Electronic devices and methods for gernerating displayed image
CN117437864A (en) Display system supporting peep-proof function and display control method
CN110910839A (en) Control method and control system of display module
CN113064574B (en) Electronic equipment and display parameter control method
US8487874B2 (en) Control system and method for controlling information processing devices
KR102352791B1 (en) Display device capable of switching image sources and operating system
JP2006258833A (en) Projection type image display device
CN112540737B (en) Display capable of switching image sources and operating system
US20240220179A1 (en) Control method, apparatus, and electronic device
TW201321989A (en) Input/output devices and display apparatuses using the same
US20220236941A1 (en) Method for controlling display apparatus, display apparatus, and method for controlling image processing apparatus
US20100149112A1 (en) Osd control system and osd control method for controlling display panel properties according to sensed touch movements
TW201322099A (en) Display using touch panel to operate on-screen display (OSD) menu
CN117348285A (en) Display module, display device, display driving method and manufacturing method
CN116543676A (en) Power management device, power management method, and power management system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination